What a nice gadget. Have you thought about starting a production of those? I am quite sure there is a market for it, maybe not a big market, but nevertheless maybe enough for you to earn som pocket money. :)
You could set up a crowdfunding campaign to finance pcbs and housing for the device.
I would buy one!

Scott wrote at 9 Aug 2015, 2.06:

Inspiring!

Technoshaman wrote at 30 Jul 2015, 17.33:

Great project! Time to make use of the Russian dekatrons I got a long time ago. Thank you for this :)